net: spread __net_init, __net_exit
[safe/jmp/linux-2.6] / net / 8021q / vlanproc.c
index c0040c9..afead35 100644 (file)
  *****************************************************************************/
 
 #include <linux/module.h>
-#include <linux/stddef.h>      /* offsetof(), etc. */
-#include <linux/errno.h>       /* return codes */
+#include <linux/errno.h>
 #include <linux/kernel.h>
-#include <linux/slab.h>                /* kmalloc(), kfree() */
-#include <linux/mm.h>
-#include <linux/string.h>      /* inline mem*, str* functions */
-#include <linux/init.h>                /* __initfunc et al. */
-#include <asm/byteorder.h>     /* htons(), etc. */
-#include <asm/uaccess.h>       /* copy_to_user */
-#include <asm/io.h>
+#include <linux/string.h>
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
 #include <linux/fs.h>
 #include <linux/netdevice.h>
 #include <linux/if_vlan.h>
+#include <net/net_namespace.h>
+#include <net/netns/generic.h>
 #include "vlanproc.h"
 #include "vlan.h"
 
@@ -78,7 +73,8 @@ static const struct seq_operations vlan_seq_ops = {
 
 static int vlan_seq_open(struct inode *inode, struct file *file)
 {
-       return seq_open(file, &vlan_seq_ops);
+       return seq_open_net(inode, file, &vlan_seq_ops,
+                       sizeof(struct seq_net_private));
 }
 
 static const struct file_operations vlan_fops = {
@@ -86,7 +82,7 @@ static const struct file_operations vlan_fops = {
        .open    = vlan_seq_open,
        .read    = seq_read,
        .llseek  = seq_lseek,
-       .release = seq_release,
+       .release = seq_release_net,
 };
 
 /*
@@ -110,24 +106,12 @@ static const struct file_operations vlandev_fops = {
  * Proc filesystem derectory entries.
  */
 
-/*
- *     /proc/net/vlan
- */
-
-static struct proc_dir_entry *proc_vlan_dir;
-
-/*
- *     /proc/net/vlan/config
- */
-
-static struct proc_dir_entry *proc_vlan_conf;
-
 /* Strings */
-static const char *vlan_name_type_str[VLAN_NAME_TYPE_HIGHEST] = {
-    [VLAN_NAME_TYPE_RAW_PLUS_VID]       = "VLAN_NAME_TYPE_RAW_PLUS_VID",
-    [VLAN_NAME_TYPE_PLUS_VID_NO_PAD]   = "VLAN_NAME_TYPE_PLUS_VID_NO_PAD",
-    [VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD]= "VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD",
-    [VLAN_NAME_TYPE_PLUS_VID]          = "VLAN_NAME_TYPE_PLUS_VID",
+static const char *const vlan_name_type_str[VLAN_NAME_TYPE_HIGHEST] = {
+    [VLAN_NAME_TYPE_RAW_PLUS_VID]        = "VLAN_NAME_TYPE_RAW_PLUS_VID",
+    [VLAN_NAME_TYPE_PLUS_VID_NO_PAD]    = "VLAN_NAME_TYPE_PLUS_VID_NO_PAD",
+    [VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD] = "VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD",
+    [VLAN_NAME_TYPE_PLUS_VID]           = "VLAN_NAME_TYPE_PLUS_VID",
 };
 /*
  *     Interface functions
@@ -137,13 +121,15 @@ static const char *vlan_name_type_str[VLAN_NAME_TYPE_HIGHEST] = {
  *     Clean up /proc/net/vlan entries
  */
 
-void vlan_proc_cleanup(void)
+void vlan_proc_cleanup(struct net *net)
 {
-       if (proc_vlan_conf)
-               remove_proc_entry(name_conf, proc_vlan_dir);
+       struct vlan_net *vn = net_generic(net, vlan_net_id);
+
+       if (vn->proc_vlan_conf)
+               remove_proc_entry(name_conf, vn->proc_vlan_dir);
 
-       if (proc_vlan_dir)
-               proc_net_remove(name_root);
+       if (vn->proc_vlan_dir)
+               proc_net_remove(net, name_root);
 
        /* Dynamically added entries should be cleaned up as their vlan_device
         * is removed, so we should not have to take care of it here...
@@ -154,19 +140,23 @@ void vlan_proc_cleanup(void)
  *     Create /proc/net/vlan entries
  */
 
-int __init vlan_proc_init(void)
+int __net_init vlan_proc_init(struct net *net)
 {
-       proc_vlan_dir = proc_mkdir(name_root, proc_net);
-       if (proc_vlan_dir) {
-               proc_vlan_conf = create_proc_entry(name_conf,
-                                                  S_IFREG|S_IRUSR|S_IWUSR,
-                                                  proc_vlan_dir);
-               if (proc_vlan_conf) {
-                       proc_vlan_conf->proc_fops = &vlan_fops;
-                       return 0;
-               }
-       }
-       vlan_proc_cleanup();
+       struct vlan_net *vn = net_generic(net, vlan_net_id);
+
+       vn->proc_vlan_dir = proc_net_mkdir(net, name_root, net->proc_net);
+       if (!vn->proc_vlan_dir)
+               goto err;
+
+       vn->proc_vlan_conf = proc_create(name_conf, S_IFREG|S_IRUSR|S_IWUSR,
+                                    vn->proc_vlan_dir, &vlan_fops);
+       if (!vn->proc_vlan_conf)
+               goto err;
+       return 0;
+
+err:
+       pr_err("%s: can't create entry in proc filesystem!\n", __func__);
+       vlan_proc_cleanup(net);
        return -ENOBUFS;
 }
 
@@ -174,30 +164,16 @@ int __init vlan_proc_init(void)
  *     Add directory entry for VLAN device.
  */
 
-int vlan_proc_add_dev (struct net_device *vlandev)
+int vlan_proc_add_dev(struct net_device *vlandev)
 {
-       struct vlan_dev_info *dev_info = VLAN_DEV_INFO(vlandev);
-
-       if (!(vlandev->priv_flags & IFF_802_1Q_VLAN)) {
-               printk(KERN_ERR
-                      "ERROR:  vlan_proc_add, device -:%s:- is NOT a VLAN\n",
-                      vlandev->name);
-               return -EINVAL;
-       }
+       struct vlan_dev_info *dev_info = vlan_dev_info(vlandev);
+       struct vlan_net *vn = net_generic(dev_net(vlandev), vlan_net_id);
 
-       dev_info->dent = create_proc_entry(vlandev->name,
-                                          S_IFREG|S_IRUSR|S_IWUSR,
-                                          proc_vlan_dir);
+       dev_info->dent =
+               proc_create_data(vlandev->name, S_IFREG|S_IRUSR|S_IWUSR,
+                                vn->proc_vlan_dir, &vlandev_fops, vlandev);
        if (!dev_info->dent)
                return -ENOBUFS;
-
-       dev_info->dent->proc_fops = &vlandev_fops;
-       dev_info->dent->data = vlandev;
-
-#ifdef VLAN_DEBUG
-       printk(KERN_ERR "vlan_proc_add, device -:%s:- being added.\n",
-              vlandev->name);
-#endif
        return 0;
 }
 
@@ -206,28 +182,14 @@ int vlan_proc_add_dev (struct net_device *vlandev)
  */
 int vlan_proc_rem_dev(struct net_device *vlandev)
 {
-       if (!vlandev) {
-               printk(VLAN_ERR "%s: invalid argument: %p\n",
-                       __FUNCTION__, vlandev);
-               return -EINVAL;
-       }
-
-       if (!(vlandev->priv_flags & IFF_802_1Q_VLAN)) {
-               printk(VLAN_DBG "%s: invalid argument, device: %s is not a VLAN device, priv_flags: 0x%4hX.\n",
-                       __FUNCTION__, vlandev->name, vlandev->priv_flags);
-               return -EINVAL;
-       }
-
-#ifdef VLAN_DEBUG
-       printk(VLAN_DBG "%s: dev: %p\n", __FUNCTION__, vlandev);
-#endif
+       struct vlan_net *vn = net_generic(dev_net(vlandev), vlan_net_id);
 
        /** NOTE:  This will consume the memory pointed to by dent, it seems. */
-       if (VLAN_DEV_INFO(vlandev)->dent) {
-               remove_proc_entry(VLAN_DEV_INFO(vlandev)->dent->name, proc_vlan_dir);
-               VLAN_DEV_INFO(vlandev)->dent = NULL;
+       if (vlan_dev_info(vlandev)->dent) {
+               remove_proc_entry(vlan_dev_info(vlandev)->dent->name,
+                                 vn->proc_vlan_dir);
+               vlan_dev_info(vlandev)->dent = NULL;
        }
-
        return 0;
 }
 
@@ -237,23 +199,19 @@ int vlan_proc_rem_dev(struct net_device *vlandev)
  * The following few functions build the content of /proc/net/vlan/config
  */
 
-static inline int is_vlan_dev(struct net_device *dev)
-{
-       return dev->priv_flags & IFF_802_1Q_VLAN;
-}
-
 /* start read of /proc/net/vlan/config */
 static void *vlan_seq_start(struct seq_file *seq, loff_t *pos)
+       __acquires(rcu)
 {
        struct net_device *dev;
+       struct net *net = seq_file_net(seq);
        loff_t i = 1;
 
-       read_lock(&dev_base_lock);
-
+       rcu_read_lock();
        if (*pos == 0)
                return SEQ_START_TOKEN;
 
-       for_each_netdev(dev) {
+       for_each_netdev_rcu(net, dev) {
                if (!is_vlan_dev(dev))
                        continue;
 
@@ -267,14 +225,15 @@ static void *vlan_seq_start(struct seq_file *seq, loff_t *pos)
 static void *vlan_seq_next(struct seq_file *seq, void *v, loff_t *pos)
 {
        struct net_device *dev;
+       struct net *net = seq_file_net(seq);
 
        ++*pos;
 
        dev = (struct net_device *)v;
        if (v == SEQ_START_TOKEN)
-               dev = net_device_entry(&dev_base_head);
+               dev = net_device_entry(&net->dev_base_head);
 
-       for_each_netdev_continue(dev) {
+       for_each_netdev_continue_rcu(net, dev) {
                if (!is_vlan_dev(dev))
                        continue;
 
@@ -285,25 +244,29 @@ static void *vlan_seq_next(struct seq_file *seq, void *v, loff_t *pos)
 }
 
 static void vlan_seq_stop(struct seq_file *seq, void *v)
+       __releases(rcu)
 {
-       read_unlock(&dev_base_lock);
+       rcu_read_unlock();
 }
 
 static int vlan_seq_show(struct seq_file *seq, void *v)
 {
+       struct net *net = seq_file_net(seq);
+       struct vlan_net *vn = net_generic(net, vlan_net_id);
+
        if (v == SEQ_START_TOKEN) {
                const char *nmtype = NULL;
 
                seq_puts(seq, "VLAN Dev name     | VLAN ID\n");
 
-               if (vlan_name_type < ARRAY_SIZE(vlan_name_type_str))
-                   nmtype =  vlan_name_type_str[vlan_name_type];
+               if (vn->name_type < ARRAY_SIZE(vlan_name_type_str))
+                   nmtype =  vlan_name_type_str[vn->name_type];
 
                seq_printf(seq, "Name-Type: %s\n",
-                          nmtype ? nmtype :  "UNKNOWN" );
+                          nmtype ? nmtype :  "UNKNOWN");
        } else {
                const struct net_device *vlandev = v;
-               const struct vlan_dev_info *dev_info = VLAN_DEV_INFO(vlandev);
+               const struct vlan_dev_info *dev_info = vlan_dev_info(vlandev);
 
                seq_printf(seq, "%-15s| %d  | %s\n",  vlandev->name,
                           dev_info->vlan_id,    dev_info->real_dev->name);
@@ -314,20 +277,19 @@ static int vlan_seq_show(struct seq_file *seq, void *v)
 static int vlandev_seq_show(struct seq_file *seq, void *offset)
 {
        struct net_device *vlandev = (struct net_device *) seq->private;
-       const struct vlan_dev_info *dev_info = VLAN_DEV_INFO(vlandev);
-       struct net_device_stats *stats;
+       const struct vlan_dev_info *dev_info = vlan_dev_info(vlandev);
+       const struct net_device_stats *stats;
        static const char fmt[] = "%30s %12lu\n";
        int i;
 
-       if ((vlandev == NULL) || (!(vlandev->priv_flags & IFF_802_1Q_VLAN)))
+       if (!is_vlan_dev(vlandev))
                return 0;
 
-       seq_printf(seq, "%s  VID: %d     REORDER_HDR: %i  dev->priv_flags: %hx\n",
-                      vlandev->name, dev_info->vlan_id,
-                      (int)(dev_info->flags & 1), vlandev->priv_flags);
-
-
-       stats = vlan_dev_get_stats(vlandev);
+       stats = dev_get_stats(vlandev);
+       seq_printf(seq,
+                  "%s  VID: %d  REORDER_HDR: %i  dev->priv_flags: %hx\n",
+                  vlandev->name, dev_info->vlan_id,
+                  (int)(dev_info->flags & 1), vlandev->priv_flags);
 
        seq_printf(seq, fmt, "total frames received", stats->rx_packets);
        seq_printf(seq, fmt, "total bytes received", stats->rx_bytes);
@@ -341,18 +303,18 @@ static int vlandev_seq_show(struct seq_file *seq, void *offset)
                   dev_info->cnt_encap_on_xmit);
        seq_printf(seq, "Device: %s", dev_info->real_dev->name);
        /* now show all PRIORITY mappings relating to this VLAN */
-       seq_printf(seq,
-                      "\nINGRESS priority mappings: 0:%u  1:%u  2:%u  3:%u  4:%u  5:%u  6:%u 7:%u\n",
-                      dev_info->ingress_priority_map[0],
-                      dev_info->ingress_priority_map[1],
-                      dev_info->ingress_priority_map[2],
-                      dev_info->ingress_priority_map[3],
-                      dev_info->ingress_priority_map[4],
-                      dev_info->ingress_priority_map[5],
-                      dev_info->ingress_priority_map[6],
-                      dev_info->ingress_priority_map[7]);
-
-       seq_printf(seq, "EGRESSS priority Mappings: ");
+       seq_printf(seq, "\nINGRESS priority mappings: "
+                       "0:%u  1:%u  2:%u  3:%u  4:%u  5:%u  6:%u 7:%u\n",
+                  dev_info->ingress_priority_map[0],
+                  dev_info->ingress_priority_map[1],
+                  dev_info->ingress_priority_map[2],
+                  dev_info->ingress_priority_map[3],
+                  dev_info->ingress_priority_map[4],
+                  dev_info->ingress_priority_map[5],
+                  dev_info->ingress_priority_map[6],
+                  dev_info->ingress_priority_map[7]);
+
+       seq_printf(seq, " EGRESS priority mappings: ");
        for (i = 0; i < 16; i++) {
                const struct vlan_priority_tci_mapping *mp
                        = dev_info->egress_priority_map[i];